• Country
• United States of America (USA)

• Manufacturer / Brand
• Palmer Electric & MFG. CO.; Toledo (OH)

• Year
• 1924

• Category
• Detector-Radio (Crystal or diode, without tubes/transistors)

• Radiomuseum.org ID
• 50212

• Main principle
• Crystal or Solid State Detector

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Du-Wa Crystal Set - Palmer Electric & MFG. CO.;

• Shape
• Tablemodel, with any shape - general.

• Notes

• Two slider coils.

  There is also a similar wave trap (eliminator).

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• Mentioned in
• Crystal Clear (Volume 1) (p.60)

• Other Models

• Here you find 3 models, 2 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Palmer Electric & MFG. CO.; Toledo (OH)